Home / 15,728.88-21,705.03-8,653.95

Finding the Fourth Proportional to 15,728.88, 21,705.03 and 8,653.95

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Solution

The fourth proportional to 15,728.88, 21,705.03 and 8,653.95 is: 11,942.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,728.88 : 21,705.03 = 8,653.95 : x
  2. Step 2: Convert to fraction form
    15,728.88/21,705.03 = 8,653.95/x
  3. Step 3: Cross multiply
    15,728.88x = 21,705.03 × 8,653.95
  4. Step 4: Simplify right side
    15,728.88x = 187,834,244.37
  5. Step 5: Solve for x
    x = 187,834,244.37/15,728.88
  6. Step 6: Final answer
    x = 11,942.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.